Mutation Mode, Hero Mode, Hero Mode X causes Computer Freeze

I've been playing since beta. Took a break and decided to come back. Last month I tried patching and after 20 tries or so. It finally patched through, only to start crashing. I figured the files were either outdated or corrupted. I uninstalled and deleted all the CF folders. Recently I re-downloaded CF using the newest CF downloader.(Avast was disabled) This being said, there should be no problems or issues with the files. I know everything in my system is up to par. I have updated all my drivers and system utilities.(Window 7 64bit) I can play any game on max.(Alienware) Every game mode works except for Mutation Mode. Mutation Mode, Hero Mode and Hero Mode X are playable to a extent. Sometimes at the beginning of gameplay, sometimes at the middle of gameplay. It would completely freeze up. Only solution would be a full reboot. Ctrl, Alt, Delete wouldn't work, since nothing will respond. It would just freeze in-game. I did finish games in these modes before, but usually 5minute games. Any longer and it would freeze up my whole computer. I know plenty of players are having this issue. However, I have yet to see this issue as a recognized problem by GM Saiden. I have tried everything and concluded, this is a issue with Z8.

Froze again in FFA.